Product Summary

O-ring stem seal carries a valve surface for opening and closing a valve port to allow water to enter the faucet. Commonly, such valve stems move vertically by reason of a screw thread arrangement cooperative between the valve stem and a gland nut or housing that mounts the valve stem in the faucet or valve housing. The faucet handle is attached to the valve stem and rotation of that handle causes the valve stem to be moved between open and closed positions. In order to prevent the passage of water between the valve stem and the gland nut, it is common to provide a seal between the gland nut and the valve stem. In most instances, this seal is a conventional elastic, rubber or neoprene O-ring.